Improvement in securing- the cannon-pinions op watches



iiniwi tang Intent dliiiiiw.

ERNEST snnnoz, or HUDSON-CITY, NEW JERSEY.

Letters Patent No. 97,123, dated November-23, 1869; antecllltcd Norcmberl, 186i).

IMPROVEMENT IN SECURIN G- THE CANNON-PINIONS OI WATCHES.

The Schedule referred to :in these Letters Patent and making part of the same To Il 'whom it may concern Be. it knowirthat i, ERNEST SANDOZ, of Hudson City, in the county ot'ergen, nud State of New Jerseydmve invented and made :i new and useful Iniprovtnnent in Gminon-Pinioiis for Watt-hes; :null do hereb) declare the. i'ollmvin;r to be n, i'ull, elem', and exact, deseription oi' thesaid invention, reference being had to the annexed drawing, innkinor part of this specification, wherein- Figure l is a vert-ical section of the cannon-pinion and centre-heel and pinion, and

Figure? is :in end View of said emilion-pinion.

These views are in 4enlarged size, and similar letters denote the saine parts.

The cannoli-pinion of Watches frequently becomes too loose. on the arbor of thev eentre-'wheeh and turns tin-remrby the. leverage ot' the hands, it' the u'a'teh is suddenly slinken; and, when the iaee has been .taken oft', this pinion is liable. to drop, and be lost. Sonietiuxes this pinion is i'itted too tightly upon the arbor, :uid ennnot be removed, in consequence ot' the lengtlf ot the bezn'ing-suriiiee.

Ny invention overcomes the nn'esaid diicnlty, :1nd consists in' :i 'spring-clasp to the cannon-pinion, consisting in'n, neck in the arbor ot' said pinion, a divided or splitend to the tube ot' said pinion, and a. collar within' said tube gmsping the said neck.

Aly this construction, tbe necessary friction vis obtained between the neck and collar, andthe. other pnrt oi'tlie-t-uhe'cni tit the arbor loosely. The pinion eaunot i'all oiaeeidentally, but can either be .drziu'n' ofi" or pressed on with iaeility, the split end of the tube sprinciinr open: Y and, when the hand is upon the square of' the tube, the friction van be increased or lessened by pressing on or partially lii'ting the square socket of theiband upon the. pinion tube.

This invention is especially useful in watches that. are u'ound and seb by the stein, nst gives the proper i'rietion to prevent. the hands being moved too sud 5 is the square at the end ot' the. tube for receiving the iniiulte-bnnd.

What, I claim, and desire to secure by Letters Patent, is- Y lhe :u-bor c, 'with :i neel 2, in combination with the spring-tube-ot' the ennnon-pinion (l, formed with the internal collar 3, substantially as and for the purposes ,set l'orth.

lu witness u-'hereofi I have hereunto set my signin,

ture, thisl lltlx day ot' March, A. l). 1869.

, ERNEST SANDOZ.

ivitnesses: l

- Giras. TI. SMITH, GEo. T. PIXCKNEY. 

